Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)
Online ISSN : 2185-6516
ISSN-L : 2185-6516
Paper (In Japanese)
FUNDAMENTAL STUDY ON SEISMIC STABILITY OF EXISTING SHEET PILE QUAY WALL BY USING GEOCELL LAYER
Hiroyuki ARAKINaoto FUKASEDaiki HIRAKAWA
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2018 Volume 74 Issue 4 Pages 488-499

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Abstract

 To keep the seismic stability and durability of existing sheet pile quay walls, the method using geocell layer was proposed in this paper. Geocell layer filled with gravelly soil was located on the upper parts of the existing tie rods, and its end was fixed to the sheet pile. The factor of stabilization with the proposed method is the frictional resistance acting on the top and bottom interface of the geocell layer. In this study, a series of shaking table tests was performed to investigate the effects of the proposed method. As the results, it was confirmed that the seismic stability of the quay wall applied the proposed method became higher than that of the conventional sheet pile quay wall. The excess pore water pressure around the geocell layer dissipated rapidly during and after shaking because the permeability of the geocell layer was high compared with that of the backfill material. The frictional resistance acting on the geocell layer was not lost during shaking due to the rapid dissipation of the excess pore water pressure, which was assumed to be the reason for the improvement of the seismic stability of the sheet pile quay wall.

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© 2018 by Japan Society of Civil Engineers
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